<template>
<div class="j-super-query-box">

  <slot name="button" :isActive="superQueryFlag" :isMobile="izMobile" :open="handleOpen" :reset="handleReset">
    <a-tooltip v-if="superQueryFlag" v-bind="tooltipProps" :mouseLeaveDelay="0.2">
      <!-- begin 不知道为什么不加上这段代码就无法生效 -->
      <span v-show="false">{{tooltipProps}}</span>
      <!-- end 不知道为什么不加上这段代码就无法生效 -->
      <template slot="title">
        <span>已有高级查询条件生效</span>
        <a-divider type="vertical"/>
        <a @click="handleReset">清空</a>
      </template>
      <a-button-group>
        <a-button type="primary" @click="handleOpen">
          <a-icon type="appstore" theme="twoTone" spin/>
          <span>高级查询</span>
        </a-button>
        <a-button v-if="izMobile" type="primary" icon="delete" @click="handleReset"/>
      </a-button-group>
    </a-tooltip>
    <a-button v-else type="primary" icon="filter" @click="handleOpen">高级查询</a-button>
  </slot>

  <j-modal
    title="高级查询构造器"
    :width="1000"
    :visible="visible"
    @cancel="handleCancel"
    :mask="false"
    :fullscreen="izMobile"
    :maskClosable="false"
    class="j-super-query-modal"
    style="top:5%;max-height: 95%;"
  >

    <template slot="footer">
      <div style="float: left">
        <a-button :loading="loading" @click="handleReset">重置</a-button>
        <a-button :loading="loading" @click="handleSave">保存查询条件</a-button>
      </div>
      <a-button :loading="loading" @click="handleCancel">关闭</a-button>
      <a-button :loading="loading" type="primary" @click="handleOk">查询</a-button>
    </template>

    <a-spin :spinning="loading">
      <a-row>
        <a-col :sm="24" :md="24-5">

          <a-empty v-if="queryParamsModel.length === 0" style="margin-bottom: 12px;">
            <div slot="description">
              <span>没有任何查询条件</span>
              <a-divider type="vertical"/>
              <a @click="handleAdd">点击新增</a>
            </div>
          </a-empty>

          <a-form v-else layout="inline">

            <a-row style="margin-bottom: 12px;">
              <a-col :md="12" :xs="24">
                <a-form-item label="过滤条件匹配" :labelCol="{md: 6,xs:24}" :wrapperCol="{md: 18,xs:24}" style="width: 100%;">
                  <a-select v-model="matchType" :getPopupContainer="node=>node.parentNode" style="width: 100%;">
                    <a-select-option value="and">AND（所有条件都要求匹配）</a-select-option>
                    <a-select-option value="or">OR（条件中的任意一个匹配）</a-select-option>
                  </a-select>
                </a-form-item>
              </a-col>
            </a-row>

            <a-row type="flex" style="margin-bottom:10px" :gutter="16" v-for="(item, index) in queryParamsModel" :key="index">

              <a-col :md="8" :xs="24" style="margin-bottom: 12px;">
                <a-tree-select
                  showSearch
                  v-model="item.field"
                  :treeData="fieldTreeData"
                  :dropdownStyle="{ maxHeight: '400px', overflow: 'auto' }"
                  placeholder="选择查询字段"
                  allowClear
                  treeDefaultExpandAll
                  :getPopupContainer="node=>node.parentNode"
                  style="width: 100%"
                  @select="(val,option)=>handleSelected(option,item)"
                >
                </a-tree-select>
              </a-col>

              <a-col :md="4" :xs="24" style="margin-bottom: 12px;">
                <a-select placeholder="匹配规则" :value="item.rule" :getPopupContainer="node=>node.parentNode" @change="handleRuleChange(item,$event)">
                  <a-select-option value="eq">等于</a-select-option>
                  <a-select-option value="like">包含</a-select-option>
                  <a-select-option value="right_like">以..开始</a-select-option>
                  <a-select-option value="left_like">以..结尾</a-select-option>
                  <a-select-option value="in">在...中</a-select-option>
                  <a-select-option value="ne">不等于</a-select-option>
                  <a-select-option value="gt">大于</a-select-option>
                  <a-select-option value="ge">大于等于</a-select-option>
                  <a-select-option value="lt">小于</a-select-option>
                  <a-select-option value="le">小于等于</a-select-option>
                </a-select>
              </a-col>

              <a-col :md="8" :xs="24" style="margin-bottom: 12px;">
                <template v-if="item.dictCode">
                  <template v-if="item.type === 'table-dict'">
                    <j-popup
                      v-model="item.val"
                      :code="item.dictTable"
                      :field="item.dictCode"
                      :orgFields="item.dictCode"
                      :destFields="item.dictCode"
                    ></j-popup>
                  </template>
                  <template v-else>
                    <j-multi-select-tag v-show="allowMultiple(item)" v-model="item.val" :dictCode="getDictCode(item)" placeholder="请选择"/>
                    <!-- 下拉选择改为下拉搜索 -->
                    <j-search-select-tag v-show="!allowMultiple(item)" v-model="item.val" :dict="getDictCode(item)" :trigger-change="true" placeholder="请选择"/>
                    <!-- <j-dict-select-tag v-show="!allowMultiple(item)" v-model="item.val" :dictCode="getDictCode(item)" placeholder="请选择"/> -->
                  </template>
                </template>
                <j-popup v-else-if="item.type === 'popup'" :value="item.val" v-bind="item.popup" group-id="superQuery" @input="(e,v)=>handleChangeJPopup(item,e,v)"/>
                <j-select-multi-user
                  v-else-if="item.type === 'select-user' || item.type === 'sel_user'"
                  v-model="item.val"
                  :buttons="false"
                  :multiple="false"
                  placeholder="请选择用户"
                  :returnKeys="['id', item.customReturnField || 'username']"
                />
                <j-select-depart
                  v-else-if="item.type === 'select-depart' || item.type === 'sel_depart'"
                  v-model="item.val"
                  :multi="false"
                  placeholder="请选择部门"
                  :customReturnField="item.customReturnField || 'id'"
                />
                <a-select
                  v-else-if="item.options instanceof Array"
                  v-model="item.val"
                  :options="item.options"
                  allowClear
                  placeholder="请选择"
                  :mode="allowMultiple(item)?'multiple':''"
                />
                <j-area-linkage v-model="item.val" v-else-if="item.type==='area-linkage' || item.type==='pca'" style="width: 100%"/>
                <j-date v-else-if=" item.type=='date' " v-model="item.val" placeholder="请选择日期" style="width: 100%"></j-date>
                <j-date v-else-if=" item.type=='datetime' " v-model="item.val" placeholder="请选择时间" :show-time="true" date-format="YYYY-MM-DD HH:mm:ss" style="width: 100%"></j-date>
                <a-time-picker v-else-if="item.type==='time'" :value="item.val ? moment(item.val,'HH:mm:ss') : null" format="HH:mm:ss" style="width: 100%" @change="(time,value)=>item.val=value"/>
                <a-input-number v-else-if=" item.type=='int'||item.type=='number' " style="width: 100%" placeholder="请输入数值" v-model="item.val"/>
                <a-select v-else-if="item.type=='switch'" placeholder="请选择" v-model="item.val">
                  <a-select-option value="Y">是</a-select-option>
                  <a-select-option value="N">否</a-select-option>
                </a-select>
                <a-input v-else v-model="item.val" placeholder="请输入值"/>
              </a-col>

              <a-col :md="4" :xs="0" style="margin-bottom: 12px;">
                <a-button @click="handleAdd" icon="plus"></a-button>&nbsp;
                <a-button @click="handleDel( index )" icon="minus"></a-button>
              </a-col>

              <a-col :md="0" :xs="24" style="margin-bottom: 12px;text-align: right;">
                <a-button @click="handleAdd" icon="plus"></a-button>&nbsp;
                <a-button @click="handleDel( index )" icon="minus"></a-button>
              </a-col>

            </a-row>

          </a-form>
        </a-col>
        <a-col :sm="24" :md="5">
          <!-- 查询记录 -->

          <a-card class="j-super-query-history-card" :bordered="true">
            <div slot="title">
              保存的查询
            </div>

            <a-empty v-if="saveTreeData.length === 0" class="j-super-query-history-empty" description="没有保存任何查询"/>
            <a-tree
              v-else
              class="j-super-query-history-tree"
              showIcon
              :treeData="saveTreeData"
              :selectedKeys="[]"
              @select="handleTreeSelect"
            >
            </a-tree>
          </a-card>

        </a-col>
      </a-row>

    </a-spin>

    <a-modal title="请输入保存的名称" :visible="prompt.visible" @cancel="prompt.visible=false" @ok="handlePromptOk">
      <a-input v-model="prompt.value"></a-input>
    </a-modal>

  </j-modal>
</div>
</template>

<script>
import moment from 'moment'
import * as utils from '@/utils/util'
import { mixinDevice } from '@/utils/mixin'
import JDate from '@/components/jeecg/JDate.vue'
import JSelectDepart from '@/components/jeecgbiz/JSelectDepart'
import JSelectMultiUser from '@/components/jeecgbiz/JSelectMultiUser'
import JMultiSelectTag from '@/components/dict/JMultiSelectTag'
import JAreaLinkage from '@comp/jeecg/JAreaLinkage'
import JSearchSelectTag from '@/components/dict/JSearchSelectTag'
export default {
  name: 'JSuperQuery',
  mixins: [mixinDevice],
  components: { JAreaLinkage, JMultiSelectTag, JDate, JSelectDepart, JSelectMultiUser, JSearchSelectTag },
  props: {
    /*
       fieldList: [{
          value:'',
          text:'',
          type:'',
          dictCode:'' // 只要 dictCode 有值，无论 type 是什么，都显示为字典下拉框
       }]
       type:date datetime int number string
      * */
    fieldList: {
      type: Array,
      required: true
    },
    /*
      * 这个回调函数接收一个数组参数 即查询条件
      * */
    callback: {
      type: String,
      required: false,
      default: 'handleSuperQuery'
    },

    // 当前是否在加载中
    loading: {
      type: Boolean,
      default: false
    },

    // 保存查询条件的唯一 code，通过该 code 区分
    // 默认为 null，代表以当前路由全路径为区分Code
    saveCode: {
      type: String,
      default: null
    }

  },
  data() {
    return {
      moment,
      fieldTreeData: [],

      prompt: {
        visible: false,
        value: ''
      },

      visible: false,
      queryParamsModel: [],
      treeIcon: <a-icon type='file-text'/>,
      // 保存查询条件的treeData
      saveTreeData: [],
      // 保存查询条件的前缀名
      saveCodeBefore: 'JSuperQuerySaved_',
      // 查询类型，过滤条件匹配（and、or）
      matchType: 'and',
      superQueryFlag: false
    }
  },
  computed: {
    izMobile() {
      return this.device === 'mobile'
    },
    tooltipProps() {
      return this.izMobile ? { visible: false } : {}
    },
    fullSaveCode() {
      let saveCode = this.saveCode
      if (saveCode == null || saveCode === '') {
        saveCode = this.$route.fullPath
      }
      return this.saveCodeBefore + saveCode
    }
  },
  watch: {
    // 当 saveCode 变化时，重新查询已保存的条件
    fullSaveCode: {
      immediate: true,
      handler() {
        const list = this.$ls.get(this.fullSaveCode)
        if (list instanceof Array) {
          this.saveTreeData = list.map(i => this.renderSaveTreeData(i))
        }
      }
    },
    fieldList: {
      deep: true,
      immediate: true,
      handler(val) {
        const mainData = []; const subData = []
        val.forEach(item => {
          const data = { ...item }
          data.label = data.label || data.text
          const hasChildren = (data.children instanceof Array)
          data.disabled = hasChildren
          data.selectable = !hasChildren
          if (hasChildren) {
            data.children = data.children.map(item2 => {
              const child = { ...item2 }
              child.label = child.label || child.text
              child.label = data.label + '-' + child.label
              child.value = data.value + ',' + child.value
              child.val = ''
              return child
            })
            data.val = ''
            subData.push(data)
          } else {
            mainData.push(data)
          }
        })
        this.fieldTreeData = mainData.concat(subData)
      }
    }
  },

  methods: {
    show() {
      if (!this.queryParamsModel || this.queryParamsModel.length === 0) {
        this.resetLine()
      }
      this.visible = true
    },
    handleOk() {
      if (!this.isNullArray(this.queryParamsModel)) {
        const event = {
          matchType: this.matchType,
          params: this.removeEmptyObject(this.queryParamsModel)
        }
        // 移动端模式下关闭弹窗
        if (this.izMobile) {
          this.visible = false
        }
        this.emitCallback(event)
      } else {
        this.$message.warn('不能查询空条件')
      }
    },
    emitCallback(event = {}) {
      const { params = [], matchType = this.matchType } = event
      this.superQueryFlag = (params && params.length > 0)
      for (const param of params) {
        if (Array.isArray(param.val)) {
          param.val = param.val.join(',')
        }
      }
      console.debug('---高级查询参数--->', { params, matchType })
      this.$emit(this.callback, params, matchType)
    },
    handleCancel() {
      this.close()
    },
    close() {
      this.$emit('close')
      this.visible = false
    },
    handleAdd() {
      this.addNewLine()
    },
    addNewLine() {
      this.queryParamsModel.push({ rule: 'eq' })
    },
    resetLine() {
      this.superQueryFlag = false
      this.queryParamsModel = []
      this.addNewLine()
    },
    handleDel(index) {
      this.queryParamsModel.splice(index, 1)
    },
    handleSelected(node, item) {
      console.log('---------------------------')
      console.log(node)
      const { type, options, dictCode, dictTable, customReturnField, popup } = node.dataRef
      item['type'] = type
      item['options'] = options
      item['dictCode'] = dictCode
      item['dictTable'] = dictTable
      item['customReturnField'] = customReturnField
      if (popup) {
        item['popup'] = popup
      }
      this.$set(item, 'val', undefined)
    },
    handleOpen() {
      this.show()
    },
    handleReset() {
      this.resetLine()
      this.emitCallback()
    },
    handleSave() {
      const queryParams = this.removeEmptyObject(this.queryParamsModel)
      if (this.isNullArray(queryParams)) {
        this.$message.warning('空条件不能保存')
      } else {
        this.prompt.value = ''
        this.prompt.visible = true
      }
    },
    handlePromptOk() {
      const { value } = this.prompt
      if (!value) {
        this.$message.warning('保存名称不能为空')
        return
      }
      // 取出查询条件
      const records = this.removeEmptyObject(this.queryParamsModel)
      // 判断有没有重名的
      const filterList = this.saveTreeData.filter(i => i.originTitle === value)
      if (filterList.length > 0) {
        this.$confirm({
          content: `${value} 已存在，是否覆盖？`,
          onOk: () => {
            this.prompt.visible = false
            filterList[0].records = records
            this.saveToLocalStore()
            this.$message.success('保存成功')
          }
        })
      } else {
        // 没有重名的，直接添加
        this.prompt.visible = false
        // 添加到树列表中
        this.saveTreeData.push(this.renderSaveTreeData({
          title: value,
          matchType: this.matchType,
          records: records
        }))
        // 保存到 LocalStore
        this.saveToLocalStore()
        this.$message.success('保存成功')
      }
    },
    handleTreeSelect(idx, event) {
      if (event.selectedNodes[0]) {
        const { matchType, records } = event.selectedNodes[0].data.props
        // 将保存的matchType取出，兼容旧数据，如果没有保存就还是使用原来的
        this.matchType = matchType || this.matchType
        this.queryParamsModel = utils.cloneObject(records)
      }
    },
    handleRemoveSaveTreeItem(event, vNode) {
      // 阻止事件冒泡
      event.stopPropagation()

      this.$confirm({
        content: '是否删除当前查询？',
        onOk: () => {
          const { eventKey } = vNode
          this.saveTreeData.splice(Number.parseInt(eventKey.substring(2)), 1)
          this.saveToLocalStore()
        }
      })
    },

    // 将查询保存到 LocalStore 里
    saveToLocalStore() {
      const saveValue = this.saveTreeData.map(({ originTitle, matchType, records }) => ({ title: originTitle, matchType, records }))
      this.$ls.set(this.fullSaveCode, saveValue)
    },

    isNullArray(array) {
      // 判断是不是空数组对象
      if (!array || array.length === 0) {
        return true
      }
      if (array.length === 1) {
        const obj = array[0]
        if (!obj.field || (obj.val == null || obj.val === '') || !obj.rule) {
          return true
        }
      }
      return false
    },
    // 去掉数组中的空对象
    removeEmptyObject(arr) {
      const array = utils.cloneObject(arr)
      for (let i = 0; i < array.length; i++) {
        const item = array[i]
        if (item == null || Object.keys(item).length <= 0) {
          array.splice(i--, 1)
        } else {
          if (Array.isArray(item.options)) {
            // 如果有字典属性，就不需要保存 options 了
            if (item.dictCode) {
              // 去掉特殊属性
              delete item.options
            }
          }
        }
      }
      return array
    },

    /** 渲染保存查询条件的 title（加个删除按钮） */
    renderSaveTreeData(item) {
      item.icon = this.treeIcon
      item.originTitle = item['title']
      item.title = (arg1, arg2) => {
        let vNode
        // 兼容旧版的Antdv
        if (arg1.dataRef) {
          vNode = arg1
        } else if (arg2.dataRef) {
          vNode = arg2
        } else {
          return <span style='color:red;'>Antdv版本不支持</span>
        }
        const { originTitle } = vNode.dataRef
        return (
          <div class='j-history-tree-title'>
            <span>{originTitle}</span>

            <div class='j-history-tree-title-closer' onClick={e => this.handleRemoveSaveTreeItem(e, vNode)}>
              <a-icon type='close-circle'/>
            </div>
          </div>
        )
      }
      return item
    },

    /** 判断是否允许多选 */
    allowMultiple(item) {
      return item.rule === 'in'
    },

    handleRuleChange(item, newValue) {
      const oldValue = item.rule
      this.$set(item, 'rule', newValue)
      // 上一个规则是否是 in，且type是字典或下拉
      if (oldValue === 'in') {
        if (item.dictCode || item.options instanceof Array) {
          let value = item.val
          if (typeof item.val === 'string') {
            value = item.val.split(',')[0]
          } else if (Array.isArray(item.val)) {
            value = item.val[0]
          }
          this.$set(item, 'val', value)
        }
      }
    },

    handleChangeJPopup(item, e, values) {
      item.val = values[item.popup['destFields']]
    },
    getDictCode(item) {
      return item.dictTable ? item.dictTable + ',' + item.field + ',' + item.dictCode : item.dictCode
    }
  }
}
</script>

<style lang="less" scoped>

  .j-super-query-box {
    display: inline-block;
  }

  .j-super-query-modal {

    .j-super-query-history-card {
      /deep/ .ant-card-body,
      /deep/ .ant-card-head-title {
        padding: 0;
      }

      /deep/ .ant-card-head {
        padding: 4px 8px;
        min-height: initial;
      }
    }

    .j-super-query-history-empty {
      /deep/ .ant-empty-image {
        height: 80px;
        line-height: 80px;
        margin-bottom: 0;
      }

      /deep/ img {
        width: 80px;
        height: 65px;
      }

      /deep/ .ant-empty-description {
        color: #afafaf;
        margin: 8px 0;
      }
    }

    .j-super-query-history-tree {

      .j-history-tree-title {
        width: calc(100% - 24px);
        position: relative;
        display: inline-block;

        &-closer {
          color: #999999;
          position: absolute;
          top: 0;
          right: 0;
          width: 24px;
          height: 24px;
          text-align: center;
          opacity: 0;
          transition: opacity 0.3s, color 0.3s;

          &:hover {
            color: #666666;
          }

          &:active {
            color: #333333;
          }
        }

        &:hover {
          .j-history-tree-title-closer {
            opacity: 1;
          }
        }

      }

      /deep/ .ant-tree-switcher {
        display: none;
      }

      /deep/ .ant-tree-node-content-wrapper {
        width: 100%;
      }
    }

  }

</style>
